Inner tube for automobile-tires.



' J. H. HAMLIN.

INNER TUBE FOR AUTOMOBILE TIRES.

APPLICATION FILED FEB. 25. I918- a! WYM \MMI mWE/I m/I In m4 1., w

Jase PHJT- J, H. HAMLIN.

NNER TUBE FOR AUTOMOBILE TIRES. APPLlCATiON FILED FEB. 25,1918.

Patented fiat 212, M8,

2 SHEETS-SHEET 2.

JOSEPH H. HAMLIN, OF WINS INNER TUBE FOR, AUTOMOBILE-TIRES.

Application and February 25, 191B.

wn that I, JOSEPH H. .HAMLIN, he United States, and a resident -Salen;, in the county of Forsyth nd .stete of North Carolina, have invented i and useful Improvements in u ies for Automobile-Tires, of which lo 't'oiowing is a specification.

My invention an improvement in inner tuliwes tor automobile tires, and has for its object to provide a tube composed of strips of tempered steel. arranged. ircuinferentially of the tire and secured to rings that fit with in the tire, the strips being-connected at: spaced intervals by cross coil springs to insure the tit of the casing to the wheel.

in the drawings: Figure l is a side view the improved inner away Fig. 2 and tube Fig. 3 1s a side view of the tube removed;

Fig. is a transverse section of a modified form of tuhe.

The embodiment of the invention shown in Fig. l is shown in connection with a shoe or casing 1, mounted upon the wheel 2 of an automobile 3, the casing beingof the clencher type and supported by the rim 4 in the usual manner. The inner tube comprises a series of arched strips 5 of tempered steel, shaped to fi the inner surface of the shoe or casing, and these strips aresecured their ends, and ends.

The rings (3 and the band 7 are riveted to the strips, as indicated at 8 and 9, the heads of the rivets 9 bein countersunk, as shown in Fig. 2. At suita lc intervals the ends of certain strips are connected by cross coil springs 10, the ends or each spring being connccted with the strips or with the rings 6.

The hand 7 is atthe tread of the tire, and it will be evident that. when the tube is in place in the shoe or casing the said shoe or casing will be practically punct!ire-proof, the strips nd band forming a'resilient armor for the casing.

of a wheel having tube, Wlth parts broken is a transverse section of the tire to a'band 'Z intcrn'icdiate their Specification of Letters Patent.

to rings (3 at.

.01 sundry oi the strips,

lPatenied Got. 223, 1918. Serial no. 219,036.

When the improved tube is nsed'for heavy trucks, it is preferable to use the form shown in Fig. 4. In this construction the strips 11 are connected intermediate their ends by a series of bands 13, three bands being used in the present instance, and the said bands as Well as the rings are riveted to the strips.

The coil springs may he used in this construction as WCll as in that shown in Figs. 1, Q and 3. The strips and the rings and bands will be of suitable weight for the purpose. intended, lighter strips, rings and bands being used for lighter vehicles.

In practice, several rivets will be used. to connect each strip to the rings and bands, instead of one as shown.

it will be hoticcd from an inspection of Fig. 2 that the cross springs 10 are between the flanges of the rim 4, and these springs hold the clench 01' holding ribs of the shoe or casing taut against; the rim flanges, to keep the casin from jumping oil the rim. They also prevent the casing from slipping,

In both constructions, in addition to the cross springs {5, other springs 15 are used, arranged between the centers of the strips 5 and the rim. The cross springs G assist in holding" the holding ribs oi the shoe or casin in engagement with the flanges of the rim and the springs 17 assist in imparting resiliency to the tire tube.

ll claim: in combination with a shoe inner tube consisting of a series of tempered strips arched to lit the transverse curve of the shoe and to engage the outer face of the rim at their ends, rings connecting the said ends, coil springs arranged between the ends a connection be lzwcen the strips at their centers, and coil springs arranged between the centers of sundry of the strips and the rim.

JOSEPH .H. HAMLIN.

or casing, an

Wi tncsscs:

'luos. E. l :/\IP, J. CLAUDE Niom'mson. 

